From 89dad77cfbffda0303383a11026d854008c1b731 Mon Sep 17 00:00:00 2001
From: Leif Lindholm <quic_llindhol@quicinc.com>
Date: Wed, 20 Sep 2023 13:17:59 +0100
Subject: ArmPkg/ArmLib: Add ArmHasVhe () helper function

Create a helper function to query whether ID_AA64MFR1_EL1 indicates
presence of the Virtualization Host Extensions. This feature is only
visible in AARCH64 state.

Signed-off-by: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Tested-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
---
 ArmPkg/Include/Chipset/AArch64.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'ArmPkg/Include/Chipset/AArch64.h')

diff --git a/ArmPkg/Include/Chipset/AArch64.h b/ArmPkg/Include/Chipset/AArch64.h
index 690433f68e..2e87917049 100644
--- a/ArmPkg/Include/Chipset/AArch64.h
+++ b/ArmPkg/Include/Chipset/AArch64.h
@@ -24,6 +24,9 @@
 // Coprocessor Trap Register (CPTR)
 #define AARCH64_CPTR_TFP  (1 << 10)
 
+// ID_AA64MMFR1 - AArch64 Memory Model Feature Register 0 definitions
+#define AARCH64_MMFR1_VH  (0xF << 8)
+
 // ID_AA64PFR0 - AArch64 Processor Feature Register 0 definitions
 #define AARCH64_PFR0_FP   (0xF << 16)
 #define AARCH64_PFR0_GIC  (0xF << 24)
-- 
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